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Novel Radiofrequency Balloon Catheter - Impact of Ablation Parameters on Single-Shot Isolation.
- Source :
-
Circulation journal : official journal of the Japanese Circulation Society [Circ J] 2023 Jun 23; Vol. 87 (7), pp. 950-956. Date of Electronic Publication: 2023 Jun 06. - Publication Year :
- 2023
-
Abstract
- Background: A novel multielectrode radiofrequency balloon (RFB) catheter has been released for pulmonary vein isolation (PVI).<br />Methods and results: In this observational study consecutive patients with drug-refractory paroxysmal or persistent atrial fibrillation (AF) undergoing first-time PVI were enrolled in 2 high-volume ablation centers. All procedures were conducted in conjunction with a 3D-mapping system. Clinical, procedural and ablation parameters were systematically analyzed. 105 patients (58% male; 52% paroxysmal AF, 68±11.3 years mean age, left atrial volume index 38.6±14.8 mL/m <superscript>2</superscript> ) were included. 241/412 (58.5%) PVs were successfully isolated with a single shot (SS), with a time-to-isolation of 11.6±8 s. Total number of radiofrequency applications was 892 (mean 2.2/PV), resulting in successful isolation of 408/412 (99%) PVs at the end of the procedure. Mean electrodes' impedance drop was significantly higher in the SS-PVI compared with non-SS applications (21.5±6.6 vs. 18.6±6.5 Ohm). Concordantly, higher temperature rise was observed in the SS vs. non-SS applications (10.9±4.9℃ vs. 9.6±4.7℃).<br />Conclusions: In this multicenter real-world study, mean impedance drop and temperature rise were associated with successful SS-PVI applying the novel RFB catheter. These parameters may help to guide efficient usage of the new RF balloon.
Details
- Language :
- English
- ISSN :
- 1347-4820
- Volume :
- 87
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Circulation journal : official journal of the Japanese Circulation Society
- Publication Type :
- Academic Journal
- Accession number :
- 37286488
- Full Text :
- https://doi.org/10.1253/circj.CJ-23-0220